Here you can find the source of join(Iterable elements, String delimiter)
| Parameter | Description |
|---|---|
| a | a parameter |
| delimiter | a parameter |
@SuppressWarnings("rawtypes") public static String join(Iterable elements, String delimiter)
//package com.java2s; /******************************************************************************* * This file is part of the Java QuIterables Library * * The MIT License (MIT)//from w w w . ja v a 2s. c om * * Copyright (c) 2015-2016 Ren? Bergelt * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. *******************************************************************************/ import java.util.Iterator; public class Main { /** * Join the given array to a string by using the delimiter <br/> * a = {"A", "B", "C"}, delimiter = ";" <br/> * result: "A;B;C" * @param a * @param delimiter * @return */ public static String join(String[] a, String delimiter) { if (a.length == 0) return ""; if (a.length == 1) return a[0]; StringBuilder sb = new StringBuilder(); for (int i = 0; i < a.length - 1; i++) { sb.append(a[i]).append(delimiter); } sb.append(a[a.length - 1]); return sb.toString(); } /** * Join the elements in the iterable (by using their toString() method) to a string by using the delimiter <br/> * a = {"A", "B", "C"}, delimiter = ";" <br/> * result: "A;B;C" * @param a * @param delimiter * @return */ @SuppressWarnings("rawtypes") public static String join(Iterable elements, String delimiter) { Iterator it = elements.iterator(); if (elements == null || !it.hasNext()) return ""; StringBuilder sb = new StringBuilder(); for (Object element = it.next(); it.hasNext(); element = it.next()) { sb.append(element.toString()); if (it.hasNext()) sb.append(delimiter); } return sb.toString(); } }